Australian investment in Africa’s minerals sector has increased significantly in the last five years, with the number of active Australia-based companies tripling since 2005.The value of Australia’s investment in African resources is estimated at about $20bn and is likely to be well over this figure in the next few years.“Africa is on a new growth trajectory, and now is the time to have confidence in Africa’s future,” declared Ann Harrap, Australia’s High Commissioner for South Africa, in a speech delivered at...